Iyo winjiye mu iduka ry'indorerwamo ukagerageza kugura indorerwamo, uba ufite ubwoko butandukanye bw'amahitamo y'indorerwamo bitewe n'umuti wawe. Ariko abantu benshi bateshwa umutwe n'amagambo "single vision", "bifocal" na "progressive". Aya magambo yerekeza ku buryo indorerwamo zo mu ndorerwamo zawe zikozwe. Ariko niba utazi neza ubwoko bw'indorerwamo umuti wawe ukeneye, dore incamake ngufi kugira ngo igufashe gutangira.
1. Indorerwamo zo Kureba Imbona Nkubone ni iki?
Indorerwamo imwe yo kureba ni indorerwamo imwe. Ubu bwoko bw'indorerwamo bukoreshwa ku bantu babona hafi, batareba kure, bafite astigmatism, cyangwa bafite amakosa yo kureba kure. Kenshi na kenshi, indorerwamo imwe yo kureba ikoreshwa n'abantu bakeneye imbaraga zingana kugira ngo babone kure kandi begere. Ariko, hari indorerwamo imwe yo kureba yagenewe intego runaka. Urugero, indorerwamo ebyiri zo gusoma zikoreshwa gusa mu gusoma zirimo indorerwamo imwe yo kureba.
Indorerwamo y'indorerwamo imwe ibereye abana benshi ndetse n'abakiri bato kuko akenshi badakenera guhindura uburyo bwo kubona bitewe n'intera bariho. Indorerwamo yawe y'indorerwamo imwe ihora ifite igice cy'uruziga nk'umubare wa mbere kuri muganga wawe kandi ishobora no kuba irimo igice cy'ikirahure kugira ngo ikemure ikibazo cy'astigmatisme.
2. Indorerwamo za Bifocal ni iki?
Indorerwamo z'amabara abiri zifite ibice bibiri bitandukanye byo gukosora amaso. Utwo duce tugabanyijemo umurongo utandukanye uhagaze neza kuri lens. Igice cyo hejuru cya lens gikoreshwa mu kureba kure, mu gihe igice cyo hasi gikoreshwa mu kureba hafi. Igice cya lens gikoreshwa mu kureba hafi gishobora kumera mu buryo butandukanye: igice cya D, igice cy'uruziga (kigaragara/kitagaragara), igice cy'umugozi n'umurongo wa E.
Indorerwamo za bifocal zikunze gukoreshwa iyo umuntu adashobora kumenyera indorerwamo za progressive cyangwa ku bana bato amaso yabo ahinduka iyo basoma. Impamvu zigenda zigabanuka ni uko hari ikibazo gikunze guterwa n’indorerwamo za bifocal cyitwa "image jump", aho amashusho asa n’ayasimbuka iyo amaso yawe agenda hagati y’ibice bibiri by’indorerwamo.
3. Indorerwamo zigenda zihinduka ni iki?
Imiterere y'ama-lenses agezweho ni mashya kandi ateye imbere kurusha ama-lenses abiri. Aya ma-lenses atanga imbaraga zigenda zihinduka kuva hejuru y'ama-lenses kugeza hasi, atanga impinduka zihamye ku byifuzo bitandukanye byo kureba. Ama-lenses agezweho y'indorerwamo z'amaso yitwa kandi ama-lenses adafite umurongo wa bifocal kuko nta murongo ugaragara afite hagati y'ibice, bigatuma arushaho kuba meza.
Byongeye kandi, indorerwamo z’amaso zigenda ziyongera kandi zituma habaho intera iri hagati y’ibice by’indorerwamo, hagati, na hafi y’ibice by’indorerwamo yawe. Igice cy’indorerwamo z’amaso zigenda ziyongera ni cyiza cyane ku bikorwa byo hagati nko gukora kuri mudasobwa. Indorerwamo z’amaso zigenda ziyongera zifite amahitamo yo gushushanya inzira ndende cyangwa ngufi. Inzira ni igice cy’indorerwamo ziguha ubushobozi bwo kubona intera iri hagati.
Mu magambo make, lenzi zo kureba inshuro imwe (SV), lenzi zo kureba ebyiri, na lenzi zigenda ziyongera, buri imwe itanga ibisubizo bitandukanye byo gukosora amaso. Lenzi zo kureba ebyiri zibereye intera imwe (hafi cyangwa kure), mu gihe lenzi zo kureba ebyiri n'izigenda ziyongera zireba amaso ya hafi n'aya kure muri lenzi imwe. Lenzi zo kureba ebyiri zifite umurongo ugaragara utandukanya ibice bya hafi n'ibya kure, mu gihe lenzi zo kureba ebyiri zitanga inzira iboneye hagati y'intera idafite umurongo ugaragara. Niba ukeneye andi makuru, twandikire.